Ventilating-panel.



No. 894,536.Y PATENTED JULY 28, 1908.

F. E. RICHARDSON. VENTILATING PANEL.

APPLICATION FILED NOV.1l. 1907.

Uranus v To all who/m it may concern:

FRANx E. RICHARDSON, or JACKSON, ALABAMA.

VENTI'LATING-PANEE.

-Application led November 11, 1907.- SerialNo. 401,727.

Be it known that I, FRANK E. .RICHARD- soN, a citizen of the Unit-ed States, residing at Jackson, in the county of Clark and State of Alabama, have invented certain new and l useful Im rovements in Ventilating-Panels,

f is an end elevatlon of 20 orationspof of which t e following is a specification reference being had therein to the accompanyino drawing, y

` is invention relates to panels intended for insertion in doors, windows,'or walls cars and the like, for the pur ose ofladmitting air while excluding cin ers and dust. For illustration, door, but they may be used in any situation where it is desired to admit air, or air and light. l 9

In the, accompanying drawings, Figure 1 a car body having its door provided with my devices. section on the line 22, Fig. 1. section on the line 3', 3, Fig. 1.

In these vieWs.A represents a door having in its u 'per part or ordlnary anel space three aralle perforated plates,

Fig. 3 is a each plate preferably bei different size from those of the other' p ates.

. The middle plate is stationary .in the door -are each at some while the ,others are `securedin spectively, hinged at F to the body of the door to swing outward. These two plates distance from the middle plate, and for convenience they are provided with knobs G 'and are secured in closed position by suitable fastenings I-I.v Within the body of the door, below these plates, is a cavity I opening laterally near its bottom by means of a narrow door J to allow the insert1on and removal of a dust trough K.- fourth plate L Without yerforations is arof two of the three plates, in ways M. Ordinarily this plate rests in the recess below .the

other plates, as shown, but if it be desired to prevent' or restrict the entrance of air, Lit may e wholly or partially raised vand secured by any suitable catch at ,NQ The erforations in'adjacent plates are out ofregistry lso that air passing through f must take a devious course..

The devices being lthus arranged, air, escaping from the car or other chamber, either naturally or throughvthe action ofspeclal devices, will be replaced b'y air entering through the plates. throughthe outer plate is sharply dellecte Specification of Letters Patent.

the devices are shown in a fof la` frames E re- Y etweenthe planes,4

The air on -passln APatented .my 2s,- 1908.

in passing to the-apertures inthe next plate, an

cinders and dust particles,`which are materially heavier than the air, will drop out of the most rapidly moving part of the air,

which passes through the next succeedin apertures, Vand falling below the plateswi come to rest in the dust trough. This action being repeated, -by reason of having three plates, practically little dust and no cinders enter the car.' The holes in the different plates being of different sizes, the velocity of thel air is varied, and this apparently assists in eliminating dust.

The operation described is not aHected by tllie presence. o fabsence of the im erforate ate, is not desired, to provide for controlling the admission of air by cutting off in whole or in part the passa es through which it enters.

Preferably a the lates are made of glass, since light Ais usual y .desirable and rarely detrimental, yet where -light is not essential be saved by employing other expense .may material. When glass isused, it should be wire glass as indicated in the plate D, the

and the atter may be omitte when it perforations .being made to pass through the meshes of the wire.

What I claim is:

1. A Ventilating light transmitting panel consisting of a perforated glass plate fixed in a suitable frame and two auxiliary erforated' glass plates u on opposite sides o the iixed plate, paralle thereto, at some distance therefrom, and to permitaccess to all the glass surfaces.

2. A Ventilating apparatus comprising a series of 'register-lng spaced a art and prov ed with non-registering e orations,v hinged framesl normally holdmg the outer plates in parallel relation and an imperforate glass plate arranged-to arranged for ready removal arallel glass 4'plates ii slide, -between the erforated plates, into and out of registry wit the latter.

3. `Ventilating apparatus comprising a' suitab e frame, `a series of parallel y`registering perforated dplates spacedapart'in the .up er .l

part of sai frame, a dust receptacle, be ow `said plates, in position toreceive all matter falling from between them, said frame being provided with a normally closed opening for removin said receptacle.

` 4. A oor having mits upper part a series of parallel registering glassp ates spaced apart an provided with `non-,registering perforations, and further having below the plates a lpassage communicating with the exterior of 'l the door and connected,

`ing said panel with the space be'- tween the plates, for the escape of dust falling between the plates.

5. The combination with a door having an upper panel space and an internal cavity b'elow sald space, of a small door for opening said cavity, of a dust receptacle in said cavity adjacent to said small door, a panel occupys ace and consistingl o a central perforate glass plate secured .in the door, parallel perforated glass plates hinged upon opposite sides of the plate first men- .registry with those of the first plate, and an imperforate glass plate normally lying in said 15 cavity and arranged for sliding upward into the panel space to control the passage of air.

In testimony whereof I alix my signature in presence of two Witnesses.

FRANK E. RICHARDSON. 

